SillyOctpuss
Well-known member
After originally asking for build recommendations in this thread
I was all set to pull the OCD out of the enclosure when I decided to give it another go. It basically sounded all fizzy and indistinct, like it was doing a really bad impersonation of my old OCD. I changed the IC - no difference - so then I swopped the 2N7000 for a different pair and damn me if that didn't do it! I swopped both sets back and forward a few times and the difference was huge. I'm planning on doing some recording tomorrow night so will do an A/B comparison and post them on this thread tomorrow.
Out of curiosity I put both sets in my component tester
Old set
659 mv between source and drain
vt = 1.71v
cg = 121pf
rds = 3.3 ohms
669 mv
vt = 1.65v
cg = 122pf
rds = 3.3 ohms
New set
683 mv
vt = 1.86v
cg = 65pf
rds = 2.8 ohms
685mv
vt = 1.88v
cg = 64pf
rds = 2.8 ohms
Now apart from the mv between source and drain I don't really know what the rest of those results mean. If anyone could explain it I'd appreciate it. I had another 10 2n7000 and they all measure about 122pf apart from the two that are now in it. They were in a separate bag from bitsbox which is why I happened to grab those- I'm not sure where the others came from and I haven't tested any of them in the circuit yet, I will when I get a chance tomorrow.
It's a bit of a recycled special this one much like the bad bob I finished a few days ago, the enclosure, jacks, switch and a bunch of parts have all been in other builds. I'm definitely digging having such a dirty pedal in a tweed box. Temporary knobs on it as well for now.
Build recommendations please
I have an enclosure I want to reuse which is covered in tweed. It's been drilled out and the tweed has beem cut for three pots and a switch. Can anyone suggest a circuit to put in it? I built an OCD for it it last night but after playing it today it's just not floating my boat. I can't...
forum.pedalpcb.com
I was all set to pull the OCD out of the enclosure when I decided to give it another go. It basically sounded all fizzy and indistinct, like it was doing a really bad impersonation of my old OCD. I changed the IC - no difference - so then I swopped the 2N7000 for a different pair and damn me if that didn't do it! I swopped both sets back and forward a few times and the difference was huge. I'm planning on doing some recording tomorrow night so will do an A/B comparison and post them on this thread tomorrow.
Out of curiosity I put both sets in my component tester
Old set
659 mv between source and drain
vt = 1.71v
cg = 121pf
rds = 3.3 ohms
669 mv
vt = 1.65v
cg = 122pf
rds = 3.3 ohms
New set
683 mv
vt = 1.86v
cg = 65pf
rds = 2.8 ohms
685mv
vt = 1.88v
cg = 64pf
rds = 2.8 ohms
Now apart from the mv between source and drain I don't really know what the rest of those results mean. If anyone could explain it I'd appreciate it. I had another 10 2n7000 and they all measure about 122pf apart from the two that are now in it. They were in a separate bag from bitsbox which is why I happened to grab those- I'm not sure where the others came from and I haven't tested any of them in the circuit yet, I will when I get a chance tomorrow.
It's a bit of a recycled special this one much like the bad bob I finished a few days ago, the enclosure, jacks, switch and a bunch of parts have all been in other builds. I'm definitely digging having such a dirty pedal in a tweed box. Temporary knobs on it as well for now.
